Experimental probability is found by dividing the number of favorable outcomes by the total number of outcomes. The favorable outcome is landing on blue, which happened 12 times. The total number of spins is 50. So the experimental probability is $\frac{12}{50}$.

The probability of choosing a green tile is $\frac{4}{10}=\frac{2}{5}$. Since $\frac{2}{5}=0.4$ and $\frac{1}{2}=0.5$, the probability is less than $\frac{1}{2}$. Therefore, the statement that must be true is "It is less than $\frac{1}{2}$."

There are 6 beads total. A bead that is either red or blue can be chosen in $2+1=3$ favorable ways. Therefore, the probability is $\frac{3}{6}=\frac{1}{2}$.

First find the number of lettuce packets. There are 40 packets total, and 12 + 18 = 30 of them are tomato or carrot. So the number of lettuce packets is 40 - 30 = 10. The probability of choosing a lettuce packet is therefore $\frac{10}{40}=\frac{1}{4}$.

The spinner has 8 equal sections numbered 1 through 8, and 4 of those numbers are even: 2, 4, 6, and 8. So the probability of landing on an even number is $\frac{4}{8}=\frac{1}{2}$. The probability of flipping heads on a fair coin is also $\frac{1}{2}$. Because both events must happen, multiply the probabilities: $\frac{1}{2}\cdot \frac{1}{2}=\frac{1}{4}$. Therefore, the probability that the player wins is $\frac{1}{4}$.